Are you suggesting that the genetic grouping of white males is scientifically accepted as being a better ruby conference speaker than non-white or non-male people?
Another example:
> Different studies have found different results, but most have found above-average verbal and mathematical intelligence in Ashkenazi Jews, along with below-average spatial intelligence. Some studies have found IQ scores amongst Ashkenazi Jews to be a fifth to one full standard deviation above average in mathematical and verbal tests.
http://en.wikipedia.org/wiki/Ashkenazi_Jewish_intelligence#D...